{"id":"CVE-2020-36599","aliases":["GHSA-pm55-qfxr-h247"],"url":"https://o3.security/vulnerability/CVE-2020-36599","summary":"OmniAuth's `lib/omniauth/failure_endpoint.rb` does not escape `message_key` value","details":"lib/omniauth/failure_endpoint.rb in OmniAuth before 1.9.2 (and before 2.0) does not escape the message_key value.","published":"2022-08-18T23:15:08.187Z","modified":"2026-07-08T20:29:03.601488Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"RubyGems","name":"omniauth","fixedVersion":"1.9.2"},{"ecosystem":"RubyGems","name":"omniauth","fixedVersion":"2.0.0"}],"fix":{"url":"https://github.com/omniauth/omniauth/commit/43a396f181ef7d0ed2ec8291c939c95e3ed3ff00#diff-575abda9deb9b1a77bf534e898a923029b9a61e991d626db88dc6e8b34260aa2","label":"omniauth/omniauth@43a396f"},"references":[{"type":"WEB","url":"https://rubygems.org/gems/omniauth/versions/1.9.2"},{"type":"FIX","url":"https://github.com/omniauth/omniauth/commit/43a396f181ef7d0ed2ec8291c939c95e3ed3ff00#diff-575abda9deb9b1a77bf534e898a923029b9a61e991d626db88dc6e8b34260aa2"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:29:03.601488Z"}}